19/20 is done so setup for day 21.

19-blending-facecull/config.json

@@ -16,7 +16,7 @@
         "specularMap": 0
       },
       "shiny": {
-        "ambient": [0.5, 0.25, 0.31],
+        "ambient": [0.5, 0.5, 0.5],
         "shininess": 10000.0,
         "diffuseMap": 0,
         "specularMap": 0
@@ -34,6 +34,10 @@
       "grass": {
         "directory": "assets",
         "model_path": "grass.glb"
+      },
+      "window": {
+        "directory": "assets",
+        "model_path": "window.glb"
       }
     },
     "things": [
@@ -41,9 +45,9 @@
         "rotation": {"angle": 0.0, "axes": [1.0, 1.0, 1.0]},
         "scale": 1.0,
         "material": "default"},
-      {"model": "marble_cube", "position": [2.0,  0.0, 0.0],
+      {"model": "marble_cube", "position": [1.5,  0.0, 1.0],
         "rotation": {"angle": 0.0, "axes": [1.0, 1.0, 1.0]},
-        "scale": 1.0,
+        "scale": 2.0,
         "material": "default"},
       {"model": "metal_floor", "position": [0.0, 0.0, 0.0],
         "rotation": {"angle": 0.0, "axes": [1.0, 1.0, 1.0]},
@@ -52,7 +56,15 @@
       {"model": "grass", "position": [0.5,  0.13,  0.0],
         "rotation": {"angle": 90.0, "axes": [1.0,0.0,0.0]},
         "scale": 1.0,
-        "material": "default"}
+        "material": "default"},
+      {"model": "window", "position": [1.75,  0.25,  0.25],
+        "rotation": {"angle": 90.0, "axes": [1.0,0.0,0.0]},
+        "scale": 1.0,
+        "material": "shiny"},
+      {"model": "window", "position": [1.5,  0.25,  0.0],
+        "rotation": {"angle": 90.0, "axes": [1.0,0.0,0.0]},
+        "scale": 1.0,
+        "material": "shiny"}
     ],
     "camera": {
       "position": [0.0, 0.1, 3.0],
@@ -73,7 +85,8 @@
           "linear": 0.0,
           "quadratic": 0.0,
           "cut_off": 0.0,
-          "outer_cut_off": 0.0
+          "outer_cut_off": 0.0,
+          "on": true
         }
       ],
       "positioned": [
@@ -87,7 +100,8 @@
           "linear": 0.09,
           "quadratic": 0.032,
           "cut_off": 12.5,
-          "outer_cut_off": 17.5
+          "outer_cut_off": 17.5,
+          "on": true
         }
       ],
       "spot": [
@@ -102,7 +116,8 @@
         "linear": 0.09,
         "quadratic": 0.032,
         "cut_off": 12.5,
-        "outer_cut_off": 17.5
+        "outer_cut_off": 17.5,
+        "on": true
       }
     }
   }

19-blending-facecull/src/components.hpp

@@ -2,7 +2,7 @@
 
 #include <glm/glm.hpp>
 #include <vector>
-#include <map>
+#include <unordered_map>
 #include "json.hpp"
 
 const unsigned int SCR_WIDTH = 800;
@@ -34,6 +34,7 @@ namespace components {
     float quadratic=0.0f;
     float cut_off=0.0f;
     float outer_cut_off=0.0f;
+    bool on=true;
 
     void adjust(float amount) {
       ambient += amount;
@@ -46,7 +47,7 @@ namespace components {
       position, direction,
       ambient, diffuse, specular,
       constant, linear, quadratic,
-      cut_off, outer_cut_off);
+      cut_off, outer_cut_off, on);
 
   struct Lighting {
     std::vector<Light> directional;
@@ -102,8 +103,8 @@ namespace components {
   struct Scene {
     components::Shader shader;
     components::Shader light_shader;
-    std::map<std::string, Material> materials;
+    std::unordered_map<std::string, Material> materials;
-    std::map<std::string, Model> models;
+    std::unordered_map<std::string, Model> models;
     std::vector<Thing> things;
     Camera camera;
     Lighting light;

19-blending-facecull/src/main.cpp

@@ -2,6 +2,7 @@
 #include <stb_image.h>
 #include "scene.hpp"
 #include "utils.hpp"
+
 void framebuffer_size_callback(GLFWwindow *window, int width, int height);
 
 void init_glfw() {
@@ -71,6 +72,12 @@ void process_input(GLFWwindow *window, Scene& scene) {
   }
 
   if(glfwGetKey(window, GLFW_KEY_L) == GLFW_PRESS) {
+    scene.light.camera.on = !scene.light.camera.on;
+
+    scene.shader.apply_lighting(scene.light);
+  }
+
+  if(glfwGetKey(window, GLFW_KEY_O) == GLFW_PRESS) {
     for(auto& light : scene.light.directional) {
       light.adjust(-0.01f);
     }

19-blending-facecull/src/scene.cpp

@@ -7,6 +7,15 @@ void Scene::update() {
   deltaTime = currentFrame - lastFrame;
   lastFrame = currentFrame;
 
+  // for now just detect the camera moved and do spotlight update
+  if(camera.dirty) {
+    light.camera.position = camera.position;
+    light.camera.direction = camera.front;
+    // just update the camera's light
+    shader.apply_spot_light(light.camera, 0);
+    camera.dirty = false;
+  }
+
   camera.update(deltaTime);
 }
 
@@ -38,15 +47,6 @@ void Scene::render(GLFWwindow* window) {
   shader.setMat4("view", view);
   shader.setMat4("projection", projection);
 
-  // for now just detect the camera moved and do spotlight update
-  if(camera.dirty) {
-    light.camera.position = camera.position;
-    light.camera.direction = camera.front;
-    // just update the camera's light
-    shader.apply_spot_light(light.camera, 0);
-    camera.dirty = false;
-  }
-
   for(auto& thing : things) {
     draw_thing(shader, thing);
   }

19-blending-facecull/src/scene.hpp

@@ -12,6 +12,7 @@
 #include "camera.hpp"
 #include "components.hpp"
 #include <vector>
+#include <unordered_map>
 
 struct Thing {
   std::string name;
@@ -20,16 +21,17 @@ struct Thing {
   components::Position position;
   components::Rotation rotation;
   float scale;
+  float distance = 0;
 };
 
 struct Scene {
   Shader shader;
   Shader light_shader;
 
-  std::map<std::string, components::Material> materials;
+  std::unordered_map<std::string, components::Material> materials;
   Camera camera;
   components::Lighting light;
-  std::map<std::string, Model> models;
+  std::unordered_map<std::string, Model> models;
   std::vector<Thing> things;
 
   float deltaTime = 0.0f;

19-blending-facecull/src/shader.cpp

@@ -134,9 +134,6 @@ void Shader::apply_lighting(const Lighting& lighting) {
   setInt("pointLightCount", lighting.positioned.size());
   setInt("dirLightCount", lighting.directional.size());
 
-  // need +1 for the camera spot light
-  setInt("spotLightCount", lighting.spot.size() + 1);
-
   for(size_t i = 0; i < lighting.directional.size(); i++) {
     apply_dir_light(lighting.directional[i], i);
   }
@@ -145,13 +142,25 @@ void Shader::apply_lighting(const Lighting& lighting) {
     apply_point_light(lighting.positioned[i], i);
   }
 
-  // set the first spotlight to the camera light
+  // set the first spotlight to the camera light if given
-  apply_spot_light(lighting.camera, 0);
+  size_t i = 0;
 
-  for(size_t i = 0; i < lighting.spot.size(); i++) {
+  // camera is optional, so only add if used
-    // need to be off by one because the camera is a spot light
+  if(lighting.camera.on) {
-    apply_spot_light(lighting.spot[i], i+1);
+    apply_spot_light(lighting.camera, 0);
+    i++;
   }
+
+  // gross but that's fine for now
+  for(; i < lighting.spot.size(); i++) {
+    // need to be off by one because the camera is a spot light
+    if(lighting.spot[i].on) {
+      apply_spot_light(lighting.spot[i], i+1);
+    }
+  }
+
+  // need +1 for the camera spot light
+  setInt("spotLightCount", (int)i);
 }
 
 

19-blending-facecull/tests/config.json

@@ -17,7 +17,8 @@
         "linear": 0.0,
         "quadratic": 0.0,
         "cut_off": 0.0,
-        "outer_cut_off": 0.0
+        "outer_cut_off": 0.0,
+        "on": true
       }
     ],
     "positioned": [
@@ -31,7 +32,8 @@
         "linear": 0.09,
         "quadratic": 0.032,
         "cut_off": 12.5,
-        "outer_cut_off": 17.5
+        "outer_cut_off": 17.5,
+        "on": true
       }
     ],
     "spot": [
@@ -47,7 +49,8 @@
         "linear": 0.09,
         "quadratic": 0.032,
         "cut_off": 12.5,
-        "outer_cut_off": 17.5
+        "outer_cut_off": 17.5,
+        "on": true
     }
   },